NECX and NESX Single-Ended to Balanced Converters

[EUVL]

A direct consequence to the successful revision of the XCEN 2018 is the reverse of that.
Namely the NECX single-ended to balanced converter.
https://www.diyaudio.com/forums/ana...d-single-converter-revisited.html#post5596866

But just as in the case of CEN/SEN IV, one can build a version of that with N & P cannel JFETs.
But one can also build one using N JFETs only, hence the addition NESX converter.

The first idea went all the way back to 2011, so it is another unfinished business to tidy up :
https://www.diyaudio.com/forums/solid-state/200325-fet-based-phase-splitter-8.html#post2814583

Surprising, both versions have very similar performance.
At 1kHz 2Vrms differential output, NECX has -86dB H2 and -109dB H3.
NESX, on the other hand, has -88dB H2 and -106dB H3.
Without global NFB, without saying.

You can read about the details in the article.


Patrick

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[EUVL]

Links to References :

2. Fet based phase splitter? - Page 2 - diyAudio

3. The Pioneer Super Linear Circuit - diyAudio

4. Zen -> Cen -> Sen, evolution of a minimalistic IV Converter - diyAudio

5. phase splitter issue - Page 3 - diyAudio

6. The XCEN -- Balanced to Single Ended Converter - diyAudio


Patrick

 

[shattered_dream]

Hmmm sounds interesting....
You don't want to sell kits do you?

 

[EUVL]

XCEN Balanced to Single-Ended Converter Revisited

My time is too expensive for you.
If you can source the 2SJ106Y and group match, I'll make boards available.


Thanks for your interest,
Patrick